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The default charset of text/* media type is UTF-8.
Thanks for the patch gareth (Gareth Adams). [Bug #15933] ------- Combines two small, but very related changes 1: Treat HTTPS the same as HTTP Previously, OpenURI followed guidance in RFC2616/3.7.1: > When no explicit charset parameter is provided by the sender, media > subtypes of the "text" type are defined to have a default charset > value of "ISO-8859-1" when received via HTTP. However this RFC was written before TLS was established and OpenURI was never updated to treat HTTPS traffic the same way. So, HTTPS documents received a different default to HTTP documents. This commit removes the scheme check so that all text/* documents processed by OpenURI are treated the same way. In theory this processing gets applied to FTP URIs too, but there's no mechanism in OpenURI for FTP documents to have Content-Type metadata appended to them, so this ends up being a no-op. 2: Change default charset for text/* to UTF-8 Replaces the default ISO-8859-1 charset previously defined in RFC2616 (now obsoleted) with a UTF-8 charset as defined in RFC6838. Fixes: https://bugs.ruby-lang.org/issues/15933
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@ -212,7 +212,10 @@ Net::IMAP::
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open-uri::
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* Warn open-uri's "open" method at Kernel.
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Use URI.open instead.
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Use URI.open instead. [Misc #15893]
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* The default charset of text/* media type is UTF-8 instead of ISO-8859-1.
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[Bug #15933]
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Pathname:
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@ -552,17 +552,16 @@ module OpenURI
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# It can be used to guess charset.
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#
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# If charset parameter and block is not given,
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# nil is returned except text type in HTTP.
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# In that case, "iso-8859-1" is returned as defined by RFC2616 3.7.1.
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# nil is returned except text type.
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# In that case, "utf-8" is returned as defined by RFC6838 4.2.1
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def charset
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type, *parameters = content_type_parse
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if pair = parameters.assoc('charset')
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pair.last.downcase
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elsif block_given?
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yield
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elsif type && %r{\Atext/} =~ type &&
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@base_uri && /\Ahttp\z/i =~ @base_uri.scheme
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"iso-8859-1" # RFC2616 3.7.1
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elsif type && %r{\Atext/} =~ type
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"utf-8" # RFC6838 4.2.1
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else
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nil
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end
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@ -648,7 +648,7 @@ class TestOpenURI < Test::Unit::TestCase
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URI.open("#{url}/nc/") {|f|
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assert_equal("aa", f.read)
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assert_equal("text/plain", f.content_type)
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assert_equal("iso-8859-1", f.charset)
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assert_equal("utf-8", f.charset)
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assert_equal("unknown", f.charset { "unknown" })
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}
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}
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